Thermochronologic Evidence Linking the Adirondack and Connecticut Valley Regions of Post-Early Cretaceous Unroofing

[909210] roden - ticen在造山过程中，经过大量的挤压断裂后，一个地区经历一段松弛期和区域伸展期，并伴有差异隆升和侵蚀，这是很常见的。然而，这些事件发生的时间相对于挤压阶段以及隆起与先前存在的断层的关系尚不清楚。该项目将研究新英格兰阿巴拉契亚山脉部分地区的隆起、侵蚀和造山后再活化断层，初步数据表明，白垩纪的隆起和侵蚀在空间上与更古老的挤压断层有关。研究结果将有助于厘清造山后隆升和侵蚀模式，并对区域构造从挤压环境向伸展环境转变的一般过程提供新的认识。

9909210Roden-TiceAfter extensive episodes of compressional faulting during orogenesis it is not uncommon for a region to undergo a period of relaxation and regional extension, accompanied by differential uplift and erosion. However, the timing of these events relative to compressional phases and the relationship of uplift to preexisting faults is unclear. This project will examine the uplift, erosion and post-orogenic reactivation faulting in a portion of the New England Appalachians where preliminary data has indicated Cretaceous uplift and erosion with a suggestion that differential uplift is spatially associated with older, compressional faults. Results are expected to clarify the pattern of post-orogenic uplift and erosion and may provide insight into the general processers of regional tectonic transition from compressional to extensional environments.